CXA2557 Просмотр технического описания (PDF) - Sony Semiconductor
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CXA2557 Datasheet PDF : 35 Pages
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CXA2557R
RF Amplifier for CD Player/CD-ROM
For the availability of this product, please contact the sales office.
Description
The CXA2557R is an RF signal processing IC for
48 pin LQFP (Plastic)
CD players, CD-ROM and CD-RW (playback).
Features
• Wide-band RF AC amplifier
• Supports CD-RW playback (RF DC, RF AC, FE,
TE and AL amplifiers)
• 5-mode RF AC equalizer (active filter type)
• RF AC equalizer boost amount and cut-off frequency
adjustable
• Voltage gain adjustable for RF DC, RF AC, FE, TE
and AL amplifier
• RF DC amplifier offset voltage switchable
• FE and TE amplifier bias voltage adjustable
• Tracking error amplifier cut-off frequency adjustable
• Alignment amplifier
• Center error amplifier
• AGC (Automatic Gain Control) function
• APC (Automatic Power Control) function
• VC/VC IN separation
• Supports laser coupler/3 spots
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCC – GND 7
V
• Storage temperature Tstg
–65 to +150 °C
• Power consumption PD
400 mW
Operating Conditions (Ta = 25°C)
• Supply voltage
VCC – GND 3.5 to 5.5 V
• Operating temperature Topr
–20 to +75 °C
Functions
• RF DC summing amplifier
• RF AC summing amplifier
• RF AC equalizer
• Focus error (FE) amplifier
• Tracking error (TE) amplifier
• Alignment (AL) amplifier
• Center error (CE) amplifier
• Mirror circuit
• AGC circuit
• VREF output
Applications
• CD players
• CD-ROM drives
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97757-PS
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